数字农科院2.0

AMMONIA AND GREENHOUSE GAS EMISSIONS FROM CO-COMPOSTING OF DEAD HENS WITH MANURE AS AFFECTED BY FORCED AERATION RATE

文献类型： 外文期刊

作者： Zhu, Z.;Dong, H.;Xi, J.;Xin, H.

作者机构：

关键词： Composting;Dead hens;Greenhouse gas;NH3;Ventilation rate

期刊名称： TRANSACTIONS OF THE ASABE

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年卷期：

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收录情况： SCI

摘要： The effect of ventilation rate (VR) on ammonia and greenhouse gas emissions from co-composting dead hens mixed with hen manure was quantified. Three VR levels of 0.9, 0.7, and 0.5 m(3) h(-1) were evaluated. Gaseous concentrations were measured using a multi-gas infrared photoacoustic analyzer, VR was measured with flowmeters, and the gas emission rate was computed from the VR and gas concentration. Decomposition of the carcasses over the 11-week composting period was greater than 88%. VR was found to significantly affect NH3, CO2, and CH4 emissions (p < 0.05). Specifically, cumulative emissions per kg of initial matter for VR of 0.9, 0.7, and 0.5 m(3) h(-1) were, respectively, 2.4, 2.0, and 1.2 g NH3; 78, 66, and 42 g CO2; 120, 90, and 52 mg CH4; and 6.4, 6.1, and 5.1 mg N2O. Hence, the study results suggest that the ventilation rate can be adjusted to reduce NH3 and GHG emissions from animal mortality compositing.

分类号： S

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